{"product_id":"u-series-v-2-18-subwoofer-used","title":"U-Series v.2 18\" Subwoofer *USED*","description":"\u003cul class=\"uk-switcher\" id=\"js-75b\"\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003eThis is a used product that has been professionally rebuilt here at Sundown Audio. It comes with a non-doa warranty only. That means they are guaranteed to work when you receive it but no further warranty afterwards. Let us know within 24 hours of delivery if this product has an issue. We will not warranty any used subwoofer after that time. These potentially have scratches \u0026amp; scuffs on the magnets\/motors and will not be in new condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"uk-switcher\"\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\" style=\"line-height: normal; text-align: left;\"\u003eRMS 1750 watts\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"line-height: normal; text-align: left;\"\u003eDual 2 or 4 ohm voice coils\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eOptimized for small ported or bandpass enclosures\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eAluminum 3” voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eHigh-temperature copper voice coil\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eDouble stitched surround\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eHeavy-duty cast basket\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eSpring-loaded terminals accept up to 8-gauge wire\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eStitched-on heavy-duty tinsel leads\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eSolid pole with vent channels and aluminum shorting ring cap\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eRear gap-venting\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"text-align: left;\"\u003eTop-Plate Cooling Channels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eDesigned to be at home in the competition lanes or playing your favorite music, the U Series is the premier “standard suspension” woofer in the Sundown lineup. A double-stacked 9.4-inch wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. A custom aluminum frame was designed specifically for the U Series. It’s substantially thicker and equipped with heat dissipation ribs at the bottom of the frame. The U v.2 motor also features an extended pole piece to keep the coil under perfect control under high stress. The coil temperature is controlled with machined, high-velocity pole channels and a series of 16 direct air-gap vents in the back plate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"cus-flex\"\u003e\n\u003cdiv class=\"box-2\"\u003e\n\u003ch3 class=\"el-title uk-text-danger uk-margin-top uk-margin-remove-bottom\"\u003eSpecifications\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRE (Ohms)\u003c\/td\u003e\n\u003ctd\u003e3.8710\u003c\/td\u003e\n\u003ctd\u003e6.0767\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFS (Hz)\u003c\/td\u003e\n\u003ctd\u003e30.9541\u003c\/td\u003e\n\u003ctd\u003e30.9212\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVAS (L)\u003c\/td\u003e\n\u003ctd\u003e111.7625\u003c\/td\u003e\n\u003ctd\u003e114.6901\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQes\u003c\/td\u003e\n\u003ctd\u003e0.5669\u003c\/td\u003e\n\u003ctd\u003e0.6572\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQms\u003c\/td\u003e\n\u003ctd\u003e5.6396\u003c\/td\u003e\n\u003ctd\u003e5.5116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQts\u003c\/td\u003e\n\u003ctd\u003e0.5151\u003c\/td\u003e\n\u003ctd\u003e0.5872\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLe (mH)\u003c\/td\u003e\n\u003ctd\u003e3.3981\u003c\/td\u003e\n\u003ctd\u003e4.7475\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBL (NA)\u003c\/td\u003e\n\u003ctd\u003e27.4023\u003c\/td\u003e\n\u003ctd\u003e31.4938\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMms (Grams)\u003c\/td\u003e\n\u003ctd\u003e565.4130\u003c\/td\u003e\n\u003ctd\u003e552.1551\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCms (uM\/N)\u003c\/td\u003e\n\u003ctd\u003e46.7560\u003c\/td\u003e\n\u003ctd\u003e47.9807\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSens (dB @ 1w\/1m)\u003c\/td\u003e\n\u003ctd\u003e89.4169\u003c\/td\u003e\n\u003ctd\u003e88.8733\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXmax\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"uk-text-nowrap\"\u003eT\/S SPECS\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eUV.2 18\" D2\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eUV.2 18\" D4\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-3\"\u003e\n\u003ch3 class=\"el-title uk-text-danger uk-margin-top uk-margin-remove-bottom\"\u003eEnclosure Specifications\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealed Enclosure\u003c\/td\u003e\n\u003ctd\u003e3.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePorted Enclosure\u003c\/td\u003e\n\u003ctd\u003e4.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tuning\u003c\/td\u003e\n\u003ctd\u003e35Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Port Area\u003c\/td\u003e\n\u003ctd\u003e64 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement\u003c\/td\u003e\n\u003ctd\u003e0.26 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e10″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e18.63″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-Out\u003c\/td\u003e\n\u003ctd\u003e16.9″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/U18.pdf?v=1688795507\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-4\"\u003e\n\u003ch3\u003eDimensions\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/U-18_v2.pdf_1.jpg?v=1699971870\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sundown Audio","offers":[{"title":"D4","offer_id":50762326343966,"sku":"USW-UV218D4","price":607.0,"currency_code":"CAD","in_stock":true},{"title":"D2","offer_id":50762326376734,"sku":"USW-UV218D2","price":607.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/Uv2-18-000-e567c11d_e95c5d43-d257-45c1-a52e-b69a67a117cb.png?v=1775506876","url":"https:\/\/platinumhpsolutions.myshopify.com\/products\/u-series-v-2-18-subwoofer-used","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}